Bog side failure🙉

[Dustydog]

Two weeks after the annual AWS full service and check over the Thetford C250 toilet pump packed up.
Unlike the later C260 , the C250 pump is removed from underneath. A bit of a faff especially when it’s raining. You can’t see the impeller but clearly it is seized. A new pump should be here on site , Settle N Yorks Friday. As a precaution also ordered a new pcb switch assembly.

Why do things always break when away? Remember we had to fix Gagakev’s toilet a few years ago🤪
On a wonderful CL just outside of Settle , beautiful views, 16 amp metered ,own water tap, and Hiutch style Wastemaster😉 This CL is well placed for good walks along the bank of the River Ribble. 20 minutes into Settle. One in my special black book of desirable well thought out CLs

 

[Hutch]

Last year , the pump failed on our honey bucket, the first time, since new, just a quick flick with a screw driver on the impeller, felt a very slight click, probably timescale, and away it went.
See what happens next week when I bring the van home for a check over.

 

[Dustydog]

Last year , the pump failed on our honey bucket, the first time, since new, just a quick flick with a screw driver on the impeller, felt a very slight click, probably timescale, and away it went.
See what happens next week when I bring the van home for a check over.

You have the C260. Mine is the older C250. You can't get to the impeller. Yours comes out from the top inside. Mine drops down outside.

 

[Beachball]

Two weeks after the annual AWS full service and check over the Thetford C250 toilet pump packed up.
Unlike the later C260 , the C250 pump is removed from underneath. A bit of a faff especially when it’s raining. You can’t see the impeller but clearly it is seized. A new pump should be here on site , Settle N Yorks Friday. As a precaution also ordered a new pcb switch assembly.

Why do things always break when away? Remember we had to fix Gagakev’s toilet a few years ago🤪
On a wonderful CL just outside of Settle , beautiful views, 16 amp metered ,own water tap, and Hiutch style Wastemaster😉 This CL is well placed for good walks along the bank of the River Ribble. 20 minutes into Settle. One in my special black book of desirable well thought out CLs

Hope your site got toilet facilities you can use until yours is mended 👍

 

[SeaDog]

We had a Dometic toilet fitted in our Lunar, nothing but trouble, the last straw came when the flush button in the circuit board packed up, the replacement was £126. Our son found a button on eBay for £2.95. We soldered it in and problem solved. However, more problems reared their ugly heads and it was a case of bite the bullet and replace it with a Thetford which uses the pump in the aqua roll. So far all has been good.

 

[Mel]

Why do things always break when away? Remember we had to fix Gagakev’s toilet a few years ago🤪

For the same reason that the gas always runs out when you are cooking? 😉
Mel

 

[Martin_E]

@Dustydog
You should be able to drop the pump down enough to about the level of the door (unless some plumb prior has chopped the cable off short on the last repair) this enables enough to bend the pipe to enable looking at the impeller

 

[JTQ]

Would part filling the flush tank with enough 50/50 vinegar water to submerge the pump's rotor, for a couple of hours, possibly overnight be worth a try?
If as reasonably suggested it's related to a bit of water hardness debris jamming things, that could fix it.
As the pump's inlet is placed right in the tank's sump, the same place the denser debris ends up, we are not talking of needing too much to drown it.

When and if it works, a bit of vinegar travelling on into the holding tank will not "spoil" what you have there!

I periodically spray my loo's bowl with our van's salad vinegar spray, to decalcify that, done so for years and with this van that's for 19 years.
Caution; Though I can't speak authoritatively on the use of vinegar with these loos, so its at your risk, I doubt it will do anything but good in the associated piping, and just might free the pump rotor.
Could if funds run to it use Thetford's bowl cleaner instead of my budget vinegar technique.
My van has a flush feed from the van's fresh water system, thankfully.

 

[borderbilly]

Would part filling the flush tank with enough 50/50 vinegar water to submerge the pump's rotor, for a couple of hours, possibly overnight be worth a try?
If as reasonably suggested it's related to a bit of water hardness debris jamming things, that could fix it.
As the pump's inlet is placed right in the tank's sump, the same place the denser debris ends up, we are not talking of needing too much to drown it.

When and if it works, a bit of vinegar travelling on into the holding tank will not "spoil" what you have there!

I periodically spray my loo's bowl with our van's salad vinegar spray, to decalcify that, done so for years and with this van that's for 19 years.
Caution; Though I can't speak authoritatively on the use of vinegar with these loos, so its at your risk, I doubt it will do anything but good in the associated piping, and just might free the pump rotor.
Could if funds run to it use Thetford's bowl cleaner instead of my budget vinegar technique.
My van has a flush feed from the van's fresh water system, thankfully.

Dont forget the salt 👍 😎

 

[JTQ]

Dont forget the salt 👍 😎

No, with my issues I am definitely not allow to add any salt!!

 

[Martin_E]

@JTQ

The 250 pump isn’t submerged, it sits in a void to the side of the tank, with a pipe coming into the top of the pump and one that comes from the base of the tank via a U tube into the base of the pump

 

[JTQ]

@JTQ

The 250 pump isn’t submerged, it sits in a void to the side of the tank, with a pipe coming into the top of the pump and one that comes from the base of the tank via a U tube into the base of the pump

Okay I have to admit I have never had one so am not aware of the details, so accept I used the wrong term.
However, I know all roto-dynamic pumps, centrifugal, etc have to be provided with a flooded suction*. Hence filling the tank with the vinegar solution will result in it getting into the rotor's void, unless the system is air locked which with a functioning syphon breaker it is very unlikely to have.
* Be that natural flooding or flooded via a primer which I am certain it will not feature.